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Training School 5

Use and characterisation of new acoustic treatments and tools

Budapest (Hungary), 16-18 December 2019


DENORMS Action’s 5th Training School “Use and characterisation of new acoustic treatments and tools” was held from 16th to 18th December 2019 in Budapest (Hungary), organised by Óbuda University.

This Training school was aimed at the industrial partners and Early Career Investigators. The training was offered in both theoretical and experimental aspects of developing new sound absorbing and sound controlling structures.

During the first day, the refresher training courses were organised covering the basic theory of sound interaction with porous materials and metamaterials. During the following two days lectures and practical sessions familiarised the audience with the new methods used in design of conventional and metamaterial based noise reducing treatments.

More information on the program of the Training School.

Slides of the lectures

Social activities

  • Day 1: Sightseeing, visit of Budapest, boat tour.
  • Day 1: YAN social event, beers for free!
  • Day 2: Diner at Thököly Restaurant.

Organizing Committee

Lívia Cvetityánin, Erika Hronyecz, and Katalin Lévay (Local organiser)
Jean-Philippe Groby (DENORMS Chair)
Olga Umnova (DENORMS Vice-Chair)
Arnaud Duval (WG 3 Leader)

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Workshop 8 – Final event

DENORMS Action Final event

Coimbra (PRT) – 18th-21st February 2020


The COST funding for four years of networking activities came to an end. To celebrate the networking achievements of the these four years, the DENORMS Action Final event took place from 18th to 21st Feb. 2020 in Coimbra (Portugal) and was the occasion of promoting the Action’s breakthroughs.

Three specific activities were developed:

  • Scientific presentations from selected STSM (Short Term Scientific Mission) awarded researchers and internationally recognized researchers.
  • Presentation and dissemination of the four Round Robin Tests achieved within the Action.
  • Three popularization talks on acoustics / building acoustics / acoustic materials as appetizers before the exhibition “Acoustics and beyond” vernissage at the University of Coimbra’s Museum of Science.

A complete social program accompanied the scientific exchange and dissemination program with daily proposed events.

Coimbra has remnants of 2,000 years of history. Roman Empire constructions coexist with internationally renowned modern buildings. Capital of the Portuguese Kingdom in bygone ages and meeting point of several cultures, Coimbra combines a rich architectonic and historical heritage with modern facilities for the arts and sports and green, open-air spaces.

Tentative Time Schedule

Tuesday 18th Feb.Amphitheater ACIV (Floor 2), Department of Civil Engineering, Faculty of Sciences and Technology, Pólo II campus (Rua Luis Reis Santos, 3030-788 Coimbra)

  • 15h00 – 17h00 : MC meeting (only for MC members)

Wednesday 19th Feb. Auditorium Laginha Serafim (Floor 3), Department of Civil Engineering, Faculty of Sciences and Technology, Pólo II campus (Rua Luis Reis Santos, 3030-788 Coimbra)

  • 8h30 Registration
  • 9h00 Welcoming words and opening ceremony

Presentation from selected STSM (Short Term Scientific Mission) awarded researchers and Working Group meetings

  • Session 1 (9h20 – 11h20): Chair Alejandro Cebrecos
    • 9h20 – 9h45 Camille Perrot (LMSME, UMR CNRS 8208, Paris Est), Identification of representative volume elements of glass wool panels
    • 9h45 – 10h10 Vicente Romero-García (LAUM, UMR CNRS 6613), Plate-type acoustic metamaterials for acoustic absorption
      • 10h10 – 10h30 Coffee break
    • 10h30 – 10h55 Milan Cervenka (Czech Technical University in Prague), Compact wideband reactive silencers with annular resonators
    • 10h55 – 11h20 Noé Jiménez (I3M, CSIC), How to design thin sound diffusers for room acoustics based on metasurfaces: metadiffusers
      • 11h20 – 11h30 Break
    • 11h30 – 12h00 Working Group 1 meeting
      • 12h00 – 13h00 Lunch break
  • Session 2 (13h00-14h40): Chair Jesus Carbajo
    • 13h00 – 13h25 Stefan Dimitrijevic (University of Belgrade), Sound Insulation and Reflection Properties of Sonic Crystal Barrier Based on Micro-Perforated Cylinders
    • 13h25 – 13h50 Viktor Hurska (Czech Technical University in Prague), Transmission and generation of sound in corrugated duct
    • 13h50 – 14h15 Lluis Garcia Raffi (Univ. Politècnica de València), Acoustic stealth materials
    • 14h15 – 14h40 Alejandro Cebrecos (Univ. Politècnica de València), Statistic effects in soft architected metamaterials
      • 14h40 – 14h50 Break
    • 14h50 – 15h20 Working Group 2 meeting
      • 15h20 – 15h40 Coffee break
  • Session 3 (15h40-17h20): Chair V. Hurska
    • 15h40 – 16h05 Eric Ballestero (London South Bank University), Measuring the Scattering Properties of a 3D-Printed Acoustic Metadiffuser
    • 16h05 – 16h30 Bart Van Damme (EMPA), Modelling acoustic absorption of perforated gypsum foams
    • 16h30 – 16h55 Tao Yang (Technical University of Liberec), Estimating non-acoustical parameters of polyester fibrous material via Bayesian inversion procedure
    • 16h55 – 17h20 Jesus Carbajo ( of Alicante), Manufacturing techniques for perforated metamaterials
      • 17h20-17h30 Break
    • 17h30 – 18h00 Working Group 3 meeting

20h  Diner at Restaurant Solar do Bacalhau -Rua da Sota, 12, Coimbra- (EUR 23.50 to be paid at the registration desk)

Thursday 20th Feb.Auditorium Laginha Serafim (Floor 3), Department of Civil Engineering, Faculty of Sciences and Technology, Pólo II campus (Rua Luis Reis Santos, 3030-788 Coimbra)

  • Morning session: Presentation and dissemination of the Round Robin Tests – Chairs: Nicolas Dauchez and Olga Umnova
    • 8h50 – 9h20 Tomasz G. Zielinski (IPPT PAN), Round-Robin Test on 3D-printed Sound Absorbing Porous Materials
    • 9h20 – 10h20 Chiara Scrosati (Italian National Research Council), Round Robin Test on low frequencies in impedance tube and reverberation room
      • 10h20 – 10h50 Coffee Break
    • 10h50 – 11h35 Paolo Bonfiglio (Materiacustica srl), Round Robin test on elastic properties of poro- and viscoelastic materials for vibro-acoustic applications
    • 11h35 – 12h00 Fabien Chevillotte (Matelys – Research Lab), Porous materials and their standards as of 2019
      • 12h00 – 13h30 Lunch break
  • Afternoon session: Scientific presentations from internationally recognized researchers – Chairs: Tomasz Zielinski and Arnaud Duval
    • 13h30 – 14h Daniel Torrent (Univ. Jaume I), Advanced artificial structures for the control of acoustic, mechanic and thermal energy
    • 14h00 – 14h30 Gautier Lefebvre (Univ. Technologie Compiègne), Prediction of localization in 2D disordered vibrating systems
    • 14h30 – 15h Laurent De Ryck (Siemens – PLM Software), On the psychoacoustics of metamaterials: A comparative listening test and design recommendations
      • 15h00 – 15h30 Coffee break
    • 15h30 – 16h00 Lucas Van Belle (KULeuven), Measuring dispersion curves for vibro-acoustic metamaterials
    • 16h00 – 17h00 Arnaud Duval (Trèves) and Fabien Chevillotte (Matelys – Research Lab), White book on industrial problems
      • 17h05 Closing ceremony

19h30 Walking tour in the old campus of the University of Coimbra (Polo I) – Meeting Point lateral entrance of the Botanic Garden / Arches of the Aqueduct São Sebastião

20h30 Diner at the 5 star luxury historical Hotel Quinta das Lágrimas – Rua António Augusto Gonçalves, Coimbra – (EUR 23.50 to be paid at the registration desk). The bus round trip from the city centre to the hotel and back is organised.

Friday 21st Feb.Science Museum of the University of Coimbra, Pólo I campus (Largo Marquês de Pombal, 3000-272 Coimbra)

  • Popularization talks – Chairs: Bart Van Damme and Daniel Torrent
      • 9h15 – 9h30 Welcoming words
    • 9h30 – 10h30 Vincent Tournat (LAUM, UMR CNRS 6613), General Acoustics
      • 10h30 – 11h00 coffe break
    • 11h00 – 12h00 Bruno Fazenda (Univ. of Salford), Rooms Acoustics
      • 12h00 – 14h00 Lunch break
    • 14h00 – 15h00 Mathieu Gaborit (KTH) and Marco Miniaci (IEMN, UMR CNRS 8520), Acoustic materials
  • Visit of the Science museum and exhibition “Acoustics and beyond” vernissage
    • 15h10 Visit of the Science museum of the University of Coimbra and of the temporary exhibition Acoustics and beyond
    • 16h00 Acoustics and beyond vernissage

Full definitive printable program is also available here. Usefull maps can be found here.



Workshop 7


Second edition of the « Symposium on Acoustic Metamaterials » (SAM)

The second edition of the « Symposium on Acoustic Metamaterials” (SAM) took place from 9th to 11th October 2019 in Ischia (Italy) and was organised by YRAM (Young Researchers in Acoustic Metamaterials), COST Action DENORMS CA 15125 and the University of Salerno.

This second Symposium on Acoustic Metamaterials was targeted to PhD candidates, Early Career Investigators (i.e. researcher whose career spun less than 8 years since the date of the PhD) and aimed at sharing new advances and breakthroughs as well as fostering the community of young researchers in the field of acoustic metamaterials. The second SAM was organised around 6 different sessions comprising 20 min talks and plenary lectures.

More information can be found on the SAM website.


Wednesday 9th October 2019

Plenary lecture by Andrea Bergamini (EMPA): Imitating Nature and Beyond and Additive Manufacturing of Phononic Materials

Contributed talks

Plenary lecture by Jean-Philippe Groby (LAUM, UMR CNRS 6613): Bio-inspired and natural meta-fluids for sound absorption.

Contributed talks

Tuesday 10th October 2019

Plenary lecture by Richard Craster (Imperial College): Elastic Metamaterials.

Contributed talks

Friday 11th October 2019

Plenary lecture by Jensen Li (Hong Kong University of Science and Technology): Space-coilin metamaterials: from negative refraction to generating wave illusion and Willis coupling.

Contributed talks

Plenary lecture by Angela Madeo (INSA Lyon): Towards the engineering design of metamaterials’ structures through micro-morphic enriched continuum modeling.

Contributed talks

Pictures of the Workshop are available here.

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